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Method for nitrogen monoxide-ozone co-use in modified atmosphere preservation for fresh dogwood

A nitrous oxide and modified atmosphere preservation technology, applied in the application, food preservation, food science and other directions, can solve the problems of reducing the activity intensity of microorganisms, prolonging the preservation time of fresh dogwood, slowing down the respiration of dogwood, etc., so as to inhibit mildew and rot. , Slow down the rate of enzymatic browning and mildew decay, and effectively protect product quality

Inactive Publication Date: 2015-07-01
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hypoxic and low-temperature storage is another method to prolong the storage time of Cornus officinalis. This method slows down the respiration of Cornus officinalis and reduces the microbial growth rate by adjusting the nitrogen, oxygen and carbon dioxide content of the storage environment and performing low-temperature storage at 2-4°C. Activity intensity, compared with the conventional low-temperature storage method, can prolong the storage period by 6-8 days, but in terms of the storage process, the number of microorganisms has not decreased, and the enzyme activity has not been inhibited, so this method has no effect on prolonging the storage time of fresh dogwood. limited effect

Method used

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  • Method for nitrogen monoxide-ozone co-use in modified atmosphere preservation for fresh dogwood

Examples

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Effect test

Embodiment 1

[0021] Put the picked fresh dogwood into a 10L polyethylene fresh-keeping box, pass nitrous oxide into the fresh-keeping box through the trachea, adjust the volume concentration (volume fraction) of nitrous oxide to 20%, and the corresponding oxygen The volume concentration (i.e. the volume fraction) is about 16%, and it is maintained for 30 minutes; then the ozone gas is passed into the fresh-keeping box at a ventilation rate of 0.1L / min, and the gas is stopped after 3 minutes, and maintained for 3 minutes; after the pretreatment, Infuse nitrogen and appropriate amount of conventional air into the crisper at a rate of 2L / min until the concentration of nitrous oxide in the crisper is reduced to 1%, and the oxygen concentration is about 3%; seal the crisper with a fresh-keeping plastic bag, Put it in a 4°C refrigerator for low-temperature storage. Take out the fresh-keeping box every 5 days, and inject an appropriate amount of nitrogen and a small amount of nitrous oxide into th...

Embodiment 2

[0024] Put the picked fresh dogwood into a 10L polyethylene fresh-keeping box, pass nitrous oxide into the fresh-keeping box through the trachea, adjust the nitrous oxide concentration to 40%, and the corresponding oxygen concentration to about 12%, and maintain it for 90 minutes Then feed ozone gas into the fresh-keeping box with a ventilation rate of 0.1L / min, stop the air intake after passing through for 3min, and maintain it for 6min; after the pretreatment finishes, feed nitrogen gas and Appropriate amount of conventional air until the concentration of nitrous oxide is reduced to 1%, and the concentration of oxygen is about 2%; seal the fresh-keeping plastic bag on the jacket of the crisper, and put it in a 4°C refrigerator for low-temperature storage. Take out the fresh-keeping box, and inject an appropriate amount of nitrogen and a small amount of nitrous oxide to maintain the oxygen concentration in the fresh-keeping box at about 2% and the nitrous oxide concentration a...

Embodiment 3

[0027]The method of low-temperature controlled-atmosphere storage of fresh cornus officinalis combined with ozone gas in this embodiment is to place the picked fresh cornus officinalis in a 10L polyethylene crisper, and pass the nitrous oxide into the crisper through the trachea , adjust the concentration of nitrous oxide to 60%, and the corresponding oxygen concentration to about 8%, and maintain it for 70 minutes; then pass in ozone gas at a ventilation rate of 0.1L / min, stop the gas flow after 3 minutes, and maintain it for 5 minutes; After the treatment, nitrogen and an appropriate amount of conventional air are introduced into the fresh-keeping box at a rate of 2L / min until the concentration of nitrous oxide is reduced to 1%, and the oxygen concentration is about 4%; seal the fresh-keeping box with a fresh-keeping plastic bag , put it in a 4°C refrigerator for low-temperature storage, take out the fresh-keeping box every 5 days, and inject an appropriate amount of nitrogen...

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Abstract

The invention discloses a method for nitrogen monoxide-ozone co-use in modified atmosphere preservation for fresh dogwood, and belongs to the technical field of preservation and storage of agricultural products. The method comprises the following steps: carrying out enzymatic inactivation treatment on the fresh dogwood by using a nitrogen monoxide gas at first, and then carrying out sterilization treatment by virtue of ozone, then placing the fresh dogwood in a modified atmosphere environment in which the volume fraction of nitrogen monoxide is 1% and the volume fraction of oxygen is 2-4% for cold storage and preservation. According to the method disclosed by the invention, nitrogen monoxide and ozone are co-used in modified atmosphere preservation and storage for fresh dogwood, so that the preservation and storage time of the fresh dogwood is prolonged to 25-30 days from the conventional cold storage time of 5-7 days, and effective ingredients in the fresh dogwood and the product appearance are further effectively protected.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping and storage of agricultural products, and in particular relates to a modified-atmosphere fresh-keeping and storage method in which nitrous oxide and ozone are jointly applied to fresh dogwood. Background technique [0002] Cornus officinalis is the mature pulp of Cornus officinalis, which has the effect of nourishing the liver and kidney, astringent meridian and solidifying. It is used for dizziness, tinnitus, soreness of waist and knees, impotence, nocturnal emission, enuresis, frequent urination, metrorrhagia, profuse sweating, prostration, internal heat and quenching thirst It is a commonly used Chinese herbal medicine. The main active ingredients of Cornus officinalis are loganin, ursolic acid, oleanolic acid, morroniside, etc. Among them, loganin is one of the water-soluble active ingredients in Cornus officinalis, and the "Chinese Pharmacopoeia" stipulates that the content of loganin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/3409A23L3/3418A23L3/36
Inventor 刘云宏王乐颜李晓芳朱文学罗磊孙悦苗帅
Owner HENAN UNIV OF SCI & TECH
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